reactjs constructor code example

Example 1: constructor react

constructor(props) {
  super(props);
  // Don't call this.setState() here!
  this.state = { counter: 0 };
  this.handleClick = this.handleClick.bind(this);
}

Example 2: component did mmount

componentDidMount()

Example 3: component did mmount

componentDidUpdate(prevProps, prevState, snapshot)